uk.co.modularaudio.mads.base.sampleplayer.mu.SingleSamplePlayerIOQueueBridge.java Source code

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Here is the source code for uk.co.modularaudio.mads.base.sampleplayer.mu.SingleSamplePlayerIOQueueBridge.java

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/**
 *
 * Copyright (C) 2015 - Daniel Hams, Modular Audio Limited
 *                      daniel.hams@gmail.com
 *
 * Mad is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Mad is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Mad.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package uk.co.modularaudio.mads.base.sampleplayer.mu;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import uk.co.modularaudio.util.audio.mad.ioqueue.IOQueueEvent;
import uk.co.modularaudio.util.audio.mad.ioqueue.MadLocklessQueueBridge;
import uk.co.modularaudio.util.audio.mad.ioqueue.ThreadSpecificTemporaryEventStorage;
import uk.co.modularaudio.util.audio.midi.MidiNote;
import uk.co.modularaudio.util.audio.midi.MidiUtils;
import uk.co.modularaudio.util.audio.timing.AudioTimingUtils;

public class SingleSamplePlayerIOQueueBridge extends MadLocklessQueueBridge<SingleSamplePlayerMadInstance> {
    private static Log log = LogFactory.getLog(SingleSamplePlayerIOQueueBridge.class.getName());

    public static final int COMMAND_ROOT_NOTE = 0;
    public static final int COMMAND_START_POS = 1;

    public SingleSamplePlayerIOQueueBridge() {
    }

    @Override
    public void receiveQueuedEventsToInstance(SingleSamplePlayerMadInstance instance,
            ThreadSpecificTemporaryEventStorage tses, long periodTimestamp, IOQueueEvent queueEntry) {
        switch (queueEntry.command) {
        case COMMAND_ROOT_NOTE: {
            MidiNote relatedNote = MidiUtils.getMidiNoteFromNumberReturnNull((int) queueEntry.value);
            if (relatedNote != null) {
                instance.currentRootNoteFreq = relatedNote.getFrequency();
            }
            break;
        }
        case COMMAND_START_POS: {
            float startPosMillis = Float.intBitsToFloat((int) queueEntry.value);
            int startPosFrameNum = AudioTimingUtils.getNumSamplesForMillisAtSampleRate(instance.sampleRate,
                    startPosMillis);
            instance.currentStartPosFrameNum = startPosFrameNum;
            break;
        }
        default: {
            String msg = "Unknown command passed on incoming queue: " + queueEntry.command;
            log.error(msg);
        }
        }
    }
}